CN106255013B - Voice coil structure - Google Patents
Voice coil structure Download PDFInfo
- Publication number
- CN106255013B CN106255013B CN201610694817.2A CN201610694817A CN106255013B CN 106255013 B CN106255013 B CN 106255013B CN 201610694817 A CN201610694817 A CN 201610694817A CN 106255013 B CN106255013 B CN 106255013B
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- voice coil
- side wall
- wall part
- wall portion
- skeleton
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- 241001270131 Agaricus moelleri Species 0.000 claims description 2
- 238000000926 separation method Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- SNAAJJQQZSMGQD-UHFFFAOYSA-N aluminum magnesium Chemical compound [Mg].[Al] SNAAJJQQZSMGQD-UHFFFAOYSA-N 0.000 description 1
- 230000003466 anti-cipated effect Effects 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
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Images
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/04—Construction, mounting, or centering of coil
- H04R9/041—Centering
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
- H04R1/2807—Enclosures comprising vibrating or resonating arrangements
- H04R1/2811—Enclosures comprising vibrating or resonating arrangements for loudspeaker transducers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2209/00—Details of transducers of the moving-coil, moving-strip, or moving-wire type covered by H04R9/00 but not provided for in any of its subgroups
- H04R2209/041—Voice coil arrangements comprising more than one voice coil unit on the same bobbin
Abstract
The invention discloses a voice coil structure, wherein a first voice coil is arranged on a first side wall part, and a second voice coil is arranged on a second side wall part; one of the first voice coil and the second voice coil is located inside the side wall portion, and the other is located outside the side wall portion, and both abut against the step. According to the voice coil structure, the voice coil positioned on the outer side can provide inward binding force for the voice coil framework; the voice coil loudspeaker voice coil in the outside can provide outside holding power to the voice coil loudspeaker voice coil skeleton, can effectively balance the power of swaying about when the resonance of voice coil loudspeaker voice coil skeleton through these two power to can restrain the resonance of voice coil loudspeaker voice coil skeleton, warp, can effectively reduce because skeleton resonance deformation and the fracture of skeleton, skeleton and voice coil loudspeaker voice coil separation, the problem of the line and the broken string that looses that appear. It is also possible to improve the high-frequency characteristics and distortion performance of the sound generating apparatus.
Description
Technical Field
The invention relates to the field of electroacoustic, in particular to a voice coil structure applicable to a vibration system of a sound generating device.
Background
A vibration system of a speaker generally includes a diaphragm, a voice coil disposed below the diaphragm, and a voice coil bobbin for fixing the voice coil and coupled to a lower side of the diaphragm. The voice coil framework mainly plays a supporting role for the voice coil so as to prevent the voice coil from deforming.
With the requirement of the micro-speaker for the full-band performance being higher and higher, when the number of the winding layers of the voice coil on the framework is less, the binding force of the voice coil on the framework is smaller, and the voice coil framework can generate stronger self-resonance in a specific frequency band; after the high-strength long-time work, the skeleton has the risks of skeleton fracture and skeleton and voice coil separation due to continuous deformation and recovery deformation of resonance. And stronger skeleton resonance can drive the less voice coil loudspeaker voice coil of binding power and take place the deformation and the resonance of horizontal direction together, easily appear the problem that the voice coil loudspeaker voice coil looses the line after long-time work. Further, the resonance of the voice coil bobbin in the horizontal direction deteriorates high-frequency characteristics and distortion performance in the acoustic performance of the speaker.
Disclosure of Invention
An object of the present invention is to provide a new technical solution of a voice coil structure.
According to a first aspect of the present invention, there is provided a voice coil structure, comprising a voice coil bobbin having a hollow inner cavity surrounded by a side wall portion, the side wall portion comprising a first side wall portion at an upper portion and a second side wall portion at a lower portion, the inner cavity surrounded by the first side wall portion and the inner cavity surrounded by the second side wall portion having different inner diameters, and a step is formed at a position where the first side wall portion and the second side wall portion are connected;
a first voice coil is arranged on the first side wall portion, and a second voice coil is arranged on the second side wall portion; one of the first voice coil and the second voice coil is located inside the side wall portion, and the other is located outside the side wall portion, and both abut against the step.
Optionally, the first voice coil and the second voice coil are connected in series.
Optionally, the first voice coil and the second voice coil are connected in parallel.
Optionally, the inner diameter of the inner cavity surrounded by the first side wall portion is larger than the inner diameter of the inner cavity surrounded by the second side wall portion;
the first voice coil is arranged on the inner wall of the first side wall part; the second voice coil is disposed on an outer wall of the second side wall portion.
Optionally, the inner diameter of the inner cavity surrounded by the first side wall portion is smaller than the inner diameter of the inner cavity surrounded by the second side wall portion;
the first voice coil is arranged on the outer wall of the first side wall part; the second voice coil is disposed on an inner wall of the second side wall portion.
Optionally, the first voice coil and the second voice coil are partially or completely overlapped in the longitudinal direction.
Optionally, a distance between an outer diameter of the first side wall portion and an outer diameter of the second side wall portion is smaller than or equal to thicknesses of the first voice coil and the second voice coil.
Optionally, the voice coil frame further comprises a top portion covering the upper end opening of the voice coil frame, and the side wall portion and the top portion are integrally arranged to form a cylindrical structure with an opening at the lower end.
Optionally, the top is flat-top, convex-hull in the middle, concave in the middle, or hollow in the middle.
Optionally, a through hole or a notch for conducting the first voice coil and the second voice coil is disposed on the side wall portion.
In the voice coil structure of the invention, one of the first voice coil and the second voice coil is positioned inside the side wall part, and the other is positioned outside the side wall part and is abutted against the step, so that the voice coil positioned at the outer side can provide inward binding force for the voice coil framework; the voice coil loudspeaker voice coil that is located the outside can provide outside holding power to the voice coil loudspeaker voice coil skeleton, through the power of rocking about when can effectively balancing the resonance of voice coil loudspeaker voice coil skeleton to can restrain the resonance of voice coil loudspeaker voice coil skeleton, warp, can effectively reduce because skeleton resonance deformation and the fracture of skeleton, skeleton and voice coil loudspeaker voice coil separation, the problem of the line and the broken string that looses that appear. It is also possible to improve the high-frequency characteristics and distortion performance of the sound generating apparatus.
The inventor of the present invention found that, in the prior art, after a high-strength and long-time work, the bobbin is subjected to constant deformation and recovery deformation due to resonance, and risks of the bobbin breaking and the bobbin separating from the voice coil exist. Therefore, the technical task to be achieved or the technical problems to be solved by the present invention are never thought or anticipated by those skilled in the art, and therefore the present invention is a new technical solution.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a cross-sectional view of a voice coil structure of the present invention.
Fig. 2 is a cross-sectional view of a voice coil former of the present invention.
Fig. 3 is a cross-sectional view of another embodiment of a voice coil former of the present invention.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
Referring to fig. 1, the present invention provides a voice coil structure comprising a voice coil bobbin having a hollow inner cavity surrounded by a side wall portion 1, the voice coil bobbin having a cross-sectional shape of a rectangular, circular or kidney shape as well known to those skilled in the art.
The voice coil structure of the present invention further includes a first voice coil 3 and a second voice coil 4 disposed on the side wall portion 1, wherein one of the first voice coil 3 and the second voice coil 4 is located inside the side wall portion 1, and the other is located outside the side wall portion 1. The method of forming the voice coil on the sidewall 1 is well known in the art, and for example, the first voice coil 3 located outside the sidewall 1 can be formed by directly winding the voice coil on the outside of the sidewall 1. When forming the second voice coil 4, the second voice coil 4 may be first wound in a predetermined shape, and then the second voice coil 4 is fitted over the inner wall of the sidewall portion 1 and may be bonded by a glue material, so that the second voice coil 4 located inside the sidewall portion 1 is formed. Of course, the first voice coil 3 may be disposed inside the side wall portion 1, and the second voice coil 4 may be disposed outside the side wall portion 1, as will be described in detail below.
The first voice coil 3 and the second voice coil 4 of the present invention need to be conducted together to communicate the first voice coil 3 and the second voice coil 4 to an external circuit. In a preferred embodiment of the present invention, a through hole or a notch may be provided in the side wall portion 1, and the first voice coil 3 and the second voice coil 4 are electrically connected together by a connection wire passing through the through hole or the notch.
For example, after the second voice coil 4 is formed, one free end of the second voice coil 4 may pass through the through hole or the notch formed in the side wall portion 1, and the first voice coil 3 is formed on the outer side wall of the side wall portion 1 in a winding manner, so that the first voice coil 3 and the second voice coil 4 are connected in series. In another preferred embodiment of the present invention, the first voice coil 3 and the second voice coil 4 may be connected together in parallel, so that the output power may be increased.
In the voice coil structure of the present invention, the first voice coil 3 and the second voice coil 4 may be completely overlapped, partially overlapped, or completely staggered in the height direction of the side wall portion 1. For example, the first voice coil 3 may be provided at an upper portion outside the side wall portion 1, and the second voice coil 4 may be provided at a lower portion inside the side wall portion 1, which are completely staggered or partially overlapped; and vice versa. When the voice coil structure is applied to a vibration system of a sound generating device, the free end of the voice coil structure needs to be extended into a magnetic gap of a magnetic circuit system, and after the voice coil structure is electrified, the voice coil structure can vibrate under the action of the magnetic circuit system, so that a vibrating diaphragm is driven to generate sound, which belongs to the common general knowledge of the technical personnel in the field.
When the voice coil structure is installed, the first voice coil 3 can be selected to be matched with the magnetic gap of the magnetic circuit system, and after the voice coil structure is electrified, the first voice coil 3 drives the vibrating diaphragm to vibrate under the action of the magnetic circuit system; or the second voice coil 4 can be selected to be matched with the magnetic gap of the magnetic circuit system, and after the second voice coil 4 is electrified, the vibrating diaphragm is driven to vibrate by the action of the magnetic circuit system; or the first voice coil 3 and the second voice coil 4 can be matched with the magnetic gap of the magnetic circuit system together, and the first voice coil 3 and the second voice coil 4 drive the diaphragm to vibrate together under the action of the magnetic circuit system after the power is turned on.
In a preferred embodiment of the present invention, a top 2 covering an upper end opening of the voice coil bobbin is further provided at an upper end of the voice coil bobbin; the top part 2 is connected with the upper end of the side wall part 1, so that the side wall part 1 and the top part 2 jointly enclose a cylindrical structure with an open lower end. The sidewall 1 and the top 2 of the present invention may be made of the same material, such as magnesium, aluminum, magnesium-aluminum alloy, or other alloy materials known to those skilled in the art. The side wall part 1 and the top part 2 may be integrated, for example, the same plate may be cut and bent to form the side wall part 1 and the top part 2 of the present invention; further, the side wall portion 1 and the ceiling portion 2 are bent in an arc shape.
When the voice coil structure is applied to a vibration system in a sound production device, the top 2 of the voice coil framework can be bonded to the lower end of a vibration diaphragm in a gluing mode, so that the top 2 and the vibration diaphragm are bonded together; at this time, the top 2 of the voice coil bobbin may function as a diaphragm dome to extend the high frequency characteristics of the sound generating device. The top 2 can be flat-topped, convex-topped, concave-topped or hollowed-out, which are several structures commonly used in the field of sound production, and will not be described in detail here.
In a preferred embodiment of the present invention, the sidewall part 1 includes a first sidewall part 10 located at an upper portion and a second sidewall part 11 located at a lower portion, referring to fig. 1 and 2. Wherein, the inner diameter of the inner cavity enclosed by the first side wall part 10 and the inner diameter of the inner cavity enclosed by the second side wall part 11 are different, so that a step 12 is formed at the position where the first side wall part 10 and the second side wall part 11 are connected.
For example, in a specific embodiment, the inner diameter of the cavity defined by the first sidewall portion 10 is larger than the inner diameter of the cavity defined by the second sidewall portion 11, see fig. 2. At this time, the first voice coil 3 may be disposed on the inner side wall of the first side wall portion 10, and the lower end of the first voice coil 3 abuts against the step 12; the second voice coil 4 may be provided on the outer side wall of the second side wall portion 11, with the upper end of the second voice coil 4 abutting against the step 12.
Because the inner diameter of the inner cavity surrounded by the second side wall part 11 is smaller than the inner diameter of the inner cavity surrounded by the first side wall part 10, the first voice coil 3 is arranged on the inner wall of the first side wall part 10, and the second voice coil 4 is arranged on the outer wall of the second side wall part 11, so that the overall thickness of the side wall part 1, the second voice coil 4 and the first voice coil 3 after combination can be greatly reduced, and the voice coil structure can be ensured to have enough vibration space in the magnetic gap of the vibration system.
In another specific embodiment of the present invention, the inner diameter of the inner cavity enclosed by the first sidewall portion 10 is smaller than the inner diameter of the inner cavity enclosed by the second sidewall portion 11, refer to fig. 3. At this time, the first voice coil 3 may be disposed on the outer wall of the first side wall portion 10, and the lower end of the first voice coil 3 abuts against the step 12; the second voice coil 4 may be disposed on the inner wall of the second side wall portion 11, and the upper end of the second voice coil 4 abuts against the step 12; .
Because the size of the inner cavity surrounded by the second side wall part 11 is larger than the size of the inner cavity surrounded by the first side wall part 10, the first voice coil 3 is arranged on the outer wall of the first side wall part 10, and the second voice coil 4 is arranged on the inner wall of the second side wall part 11, so that the overall thickness of the side wall part, the second voice coil 4 and the first voice coil 3 after being combined can be greatly reduced, and the voice coil structure is ensured to have enough vibration space in a magnetic gap of a vibration system.
In the voice coil structure, the step 12 at the joint of the first side wall part 10 and the second side wall part 11 can be formed in a bending mode, the strength of the whole side wall part 1 can be improved through the step 12, and the resonance and the deformation of a voice coil framework in the vertical direction and the horizontal direction are effectively prevented. The first voice coil 3 and the second voice coil 4 are arranged on the corresponding first side wall part 10 and the second side wall part 11, the first voice coil 3 provides a binding force or a supporting force, and the second voice coil 4 provides a supporting force or a binding force, so that the resonance of the voice coil framework in the horizontal direction can be effectively inhibited.
It is further preferable that a distance between an outer diameter of the first side wall portion 10 and an outer diameter of the second side wall portion 11 is smaller than or equal to thicknesses of the first and second voice coils 3 and 4. That is, the width of the step 12 formed at the connecting position of the first side wall 10 and the second side wall 11 is smaller than or equal to the thickness of the first voice coil 3 and the second voice coil 4, and the step 12 is prevented from occupying the space in the thickness direction of the side wall 1, so as to ensure that the voice coil structure has enough vibration space in the magnetic gap.
In the voice coil structure of the invention, one of the first voice coil and the second voice coil is positioned inside the side wall part, and the other is positioned outside the side wall part and is abutted against the step, so that the voice coil positioned at the outer side can provide inward binding force for the voice coil framework; the voice coil loudspeaker voice coil that is located the outside can provide outside holding power to the voice coil loudspeaker voice coil skeleton, through the power of rocking about when can effectively balancing the resonance of voice coil loudspeaker voice coil skeleton to can restrain the resonance of voice coil loudspeaker voice coil skeleton, warp, can effectively reduce because skeleton resonance deformation and the fracture of skeleton, skeleton and voice coil loudspeaker voice coil separation, the problem of the line and the broken string that looses that appear. It is also possible to improve the high-frequency characteristics and distortion performance of the sound generating apparatus.
Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (9)
1. A voice coil structure, characterized by: the voice coil comprises a voice coil framework which is surrounded by a side wall part (1) and has a hollow inner cavity, wherein the side wall part (1) comprises a first side wall part (10) positioned at the upper part and a second side wall part (11) positioned at the lower part, the inner diameter of the inner cavity surrounded by the first side wall part (10) is different from that of the inner cavity surrounded by the second side wall part (11), and a step (12) is formed at the connecting position of the first side wall part (10) and the second side wall part (11);
a first voice coil (3) is provided on the first side wall portion (10), and a second voice coil (4) is provided on the second side wall portion (11); one of the first voice coil (3) and the second voice coil (4) is positioned inside the side wall part (1), the other one is positioned outside the side wall part (1), and both abut against the step (12);
the first voice coil (3) and the second voice coil (4) are partially or completely overlapped in longitudinal projection.
2. A voice coil structure as claimed in claim 1, wherein: the first voice coil (3) and the second voice coil (4) are connected in series.
3. A voice coil structure as claimed in claim 1, wherein: the first voice coil (3) and the second voice coil (4) are connected in parallel.
4. A voice coil structure as claimed in claim 1, wherein: the inner diameter size of an inner cavity defined by the first side wall part (10) is larger than that of an inner cavity defined by the second side wall part (11);
the first voice coil (3) is arranged on the inner wall of the first side wall part (10); the second voice coil (4) is provided on the outer wall of the second side wall portion (11).
5. A voice coil structure as claimed in claim 1, wherein: the inner diameter size of an inner cavity surrounded by the first side wall part (10) is smaller than that of an inner cavity surrounded by the second side wall part (11);
the first voice coil (3) is arranged on the outer wall of the first side wall part (10); the second voice coil (4) is provided on the inner wall of the second side wall portion (11).
6. A voice coil structure as claimed in claim 1, wherein: the distance between the outer diameter of the first side wall portion (10) and the outer diameter of the second side wall portion (11) is smaller than or equal to the thickness of the first voice coil (3) and the second voice coil (4).
7. A voice coil structure according to any one of claims 1 to 6, wherein: still including covering voice coil skeleton upper end open-ended top (2), lateral wall portion (1), top (2) an organic whole set up and enclosed into the tubular structure of lower extreme open-ended.
8. A voice coil structure as claimed in claim 7, wherein: the top (2) is flat-top, convex hull in the middle, concave in the middle or hollow in the middle.
9. A voice coil structure as claimed in claim 1, wherein: and the side wall part (1) is provided with a through hole or a notch for conducting the first voice coil (3) and the second voice coil (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610694817.2A CN106255013B (en) | 2016-08-18 | 2016-08-18 | Voice coil structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610694817.2A CN106255013B (en) | 2016-08-18 | 2016-08-18 | Voice coil structure |
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| CN106255013A CN106255013A (en) | 2016-12-21 |
| CN106255013B true CN106255013B (en) | 2022-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610694817.2A Active CN106255013B (en) | 2016-08-18 | 2016-08-18 | Voice coil structure |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110446144B (en) * | 2019-07-22 | 2021-10-22 | 瑞声科技(新加坡)有限公司 | Sound production device |
| CN110856087B (en) * | 2019-11-25 | 2021-07-13 | 歌尔股份有限公司 | Speaker and electronic apparatus |
| CN111741415A (en) * | 2020-07-10 | 2020-10-02 | 瑞声科技(新加坡)有限公司 | Sound production device, voice coil thereof and winding method of voice coil |
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|---|---|---|---|---|
| JP2008042532A (en) * | 2006-08-07 | 2008-02-21 | Hiroshi Nakada | Speaker |
| CN101931841A (en) * | 2009-06-26 | 2010-12-29 | 清华大学 | Voice coil framework and loudspeaker |
| CN104796828A (en) * | 2015-05-04 | 2015-07-22 | 歌尔声学股份有限公司 | Speaker module |
| CN204968092U (en) * | 2015-09-01 | 2016-01-13 | 歌尔声学股份有限公司 | Speaker skeleton voice coil loudspeaker voice coil |
| CN206024096U (en) * | 2016-08-18 | 2017-03-15 | 歌尔股份有限公司 | A kind of voice coil structure |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2726258Y (en) * | 2004-05-06 | 2005-09-14 | 斯贝克电子（嘉善）有限公司 | Voice coil formed by internally and externally coiling |
| EP2141939B1 (en) * | 2008-07-02 | 2016-11-09 | Renault SAS | Mandrel for a coil transducer motor structure |
| CN201409220Y (en) * | 2009-05-08 | 2010-02-17 | 周和铭 | Voice coil |
| CN202269010U (en) * | 2011-10-22 | 2012-06-06 | 惠州市海韵电子有限公司 | Internally and externally wound multilayer voice coil |
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- 2016-08-18 CN CN201610694817.2A patent/CN106255013B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008042532A (en) * | 2006-08-07 | 2008-02-21 | Hiroshi Nakada | Speaker |
| CN101931841A (en) * | 2009-06-26 | 2010-12-29 | 清华大学 | Voice coil framework and loudspeaker |
| CN104796828A (en) * | 2015-05-04 | 2015-07-22 | 歌尔声学股份有限公司 | Speaker module |
| CN204968092U (en) * | 2015-09-01 | 2016-01-13 | 歌尔声学股份有限公司 | Speaker skeleton voice coil loudspeaker voice coil |
| CN206024096U (en) * | 2016-08-18 | 2017-03-15 | 歌尔股份有限公司 | A kind of voice coil structure |
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